Dan was an average loser on the brink of a meltdown. His rampant alcoholism and drug addiction have turned his life into a chaotic mess, and nothing seemed to ever go right for him. Then, one morning, he awakens to find that the world around him has fallen apart. Earth has passed through the tail of a mysterious comet that scientists call Wormwood, and a strange, toxic mist has descended from the sky. People everywhere begin dying off in record numbers, and those who have survived seem to have completely lost their minds, or have walled themselves up in their homes.Amid the chaos, Dan has to get it together and use everything he has learned in his life just to survive. With his addictions controlling his every decision, he will have to fight his inner demons if he is to live through Wormwood Dawn.